B2 - Population Sampling Flashcards
What is a population?
The number of a specific species in a specific area at a specific time
What can population be influenced by?
Predators
War
Migration
Food Supply
What is a reason for monitoring the size of populations?
To identify endangered species
What is the piece of equipment used to measure a plant population?
A Quadrat
How can Quadrat experiments be conducted fairly?
By drawing out a graph using coordinates, these coordinates are then wrote out into a bowl which could then be chosen randomly to determine where the Quadrat is going to be thrown
How does using more Quadrats in an experiment make the test more accurate?
Because a larger is being analysed which means the result would be closer to that of the actual population
What is a Pooter used for?
Used for small insects to suck them up without the risk of harming or killing them
What is a Sweep Net used for?
Used to catch flying insects and aquatic organisms
What is a Pitfall trap used for?
Used to catch small ground insects in the ground